Nuclear Magnetic Resonance Spectroscopy (A Level only) (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the primary use of NMR spectroscopy?
What is the primary use of NMR spectroscopy?
Determining molecular structure
Why are and nuclei used in NMR spectroscopy?
Why are and nuclei used in NMR spectroscopy?
They have nuclear spin
What is the α-spin state in NMR?
What is the α-spin state in NMR?
Low-energy, aligned with field
Which nuclei require less energy to achieve resonance?
Which nuclei require less energy to achieve resonance?
Shielded nuclei
Where do deshielded nuclei appear on an NMR spectrum?
Where do deshielded nuclei appear on an NMR spectrum?
Downfield (higher energy)
In the equation , what does represent?
In the equation , what does represent?
Planck's constant
What units are used to measure chemical shift in NMR?
What units are used to measure chemical shift in NMR?
ppm (parts per million)
Why is TMS used as the standard in NMR spectroscopy?
Why is TMS used as the standard in NMR spectroscopy?
Gives one signal, non-toxic, volatile
How many peaks appear in the NMR spectrum of 1-bromopropane?
How many peaks appear in the NMR spectrum of 1-bromopropane?
Three peaks
What medical imaging technique is based on NMR principles?
What medical imaging technique is based on NMR principles?
MRI (magnetic resonance imaging)